Results 1 to 10 of about 114,296 (299)
High-pressure pyrolysis and oxidation of DME and DME/CH4 [PDF]
Combustion and Flame, 2019 Abstract The pyrolysis and oxidation of dimethyl ether (DME) and its mixture with methane were investigated at high pressure (50 and 100 bar) and intermediate temperature (450–900 K). Mixtures highly diluted in nitrogen with different fuel–air equivalence ratios ( Φ = ∞ , 20, 1, 0.06) were studied in a laminar flow reactor. At 50 bar, the
Hamid Hashemi +2 more
exaly +2 more sources
Combustion of NH3/DME and NH3/DME/NO mixtures
FuelThe objective of this work is to study the oxidation of ammonia and dimethyl ether mixtures (NH3/DME) both in the absence and the presence of monoxide of nitrogen (NO). For this purpose, laboratory experiments have been conducted in a quartz flow reactor setup in the 875–1425 K temperature range at atmospheric pressure, modifying the oxygen excess ...
Adrián Ruiz Gutiérrez +1 more
exaly +4 more sources
A Standardizeable Framework Enabling DME/DME to Support RNP [PDF]
ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2022 The continued disruption of GNSS signals in the airspace has highlighted the need for RNP services based on terrestrial sources. Given the prevalence of DME in many complex airspaces and terminal areas, the target of DME/DME supporting RNP 1 is desirable. The route to adoption, however, has not been as straight forward as originally envisioned.
Osechas, Okuary +7 more
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Evolution and Development Trend Prospect of Metal Milling Equipment
Chinese Journal of Mechanical Engineering, 2023 The world is currently undergoing profound changes which have never happened within the past century. Global competition in the technology and industry fields is becoming increasingly fierce.
Jie Wen, Fugui Xie, Xinjun Liu, Yi Yue
doaj +1 more source
Stiffness-Performance-Based Redundant Motion Planning of a Hybrid Machining Robot
Machines, 2022 Large-scale components usually have complex structures with high local stiffness, and the holes on them are required to be machined with high precision, which makes it important and challenging to study how to efficiently and precisely drill in the large-
Yuhao He +6 more
doaj +1 more source
Alteration dependent physical-mechanical properties of quartz-diorite building stones [PDF]
International Journal of Mining and Geo-Engineering, 2016 The microscopic and geomechanical properties of igneous building stones include the level of alteration, presence of micro cracks, peak strength, porosity, proportion of detrimental minerals, etc.
Masoud Torkan +2 more
doaj +1 more source
Hybrid Navigation System Based Autonomous Positioning and Path Planning for Mobile Robots
Chinese Journal of Mechanical Engineering, 2022 Positioning and navigation technology is a new trend of research in mobile robot area. Existing researches focus on the indoor industrial problems, while many application fields are in the outdoor environment, which put forward higher requirements for ...
Shuzhan Shentu +4 more
doaj +1 more source
Formação de professores no contexto do mestrado profissional em Educação da UFScar
Devir Educação, 2020 Este artigo é decorrente de um estudo qualitativo, de cunho teórico e caracterizado como documental. Tem como objetivo apresentar as relações estabelecidas entre os questionamentos realizados pelos professores da Educação Básica, que geraram em suas ...
Maria do Carmo Sousa +1 more
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Numerical probabilistic analysis for slope stability in fractured rock masses using DFN-DEM approach [PDF]
International Journal of Mining and Geo-Engineering, 2017 Due to existence of uncertainties in input geometrical properties of fractures, there is not any unique solution for assessing the stability of slopes in jointed rock masses.
Alireza Baghbanan +4 more
doaj +1 more source
SFOL DME Pulse Shaping Through Digital Predistortion for High-Accuracy DME [PDF]
IEEE Transactions on Aerospace and Electronic Systems, 2022 Submitted to IEEE Transactions on Aerospace and Electronic ...
Sunghwa Lee, Euiho Kim, Jiwon Seo 0001
openaire +2 more sources